How to find on what settings php is running

in your webserver where php is installed
create test file called test.php with below content

<?php phpinfo(); ?>

Once done run this file http://hostname/test.php
It give a long information like below

Apache Version	Apache/2.2.22 (Ubuntu)
Apache API Version	20051115
Server Administrator	webmaster@localhost
Hostname:Port	127.0.1.1:80
User/Group	www-data(33)/33
Max Requests	Per Child: 0 - Keep Alive: on - Max Per Connection: 100
Timeouts	Connection: 300 - Keep-Alive: 5
Virtual Server	Yes
Server Root	/etc/apache2
Loaded Modules	core mod_log_config mod_logio prefork http_core mod_so mod_alias mod_auth_basic mod_authn_file mod_authz_default mod_authz_groupfile mod_authz_host mod_authz_user mod_autoindex mod_cgi mod_deflate mod_dir mod_env mod_mime mod_negotiation mod_php5 mod_reqtimeout mod_setenvif mod_status

Directive	Local Value	Master Value
engine	1	1
last_modified	0	0
xbithack	0	0

Apache Environment

Variable	Value
HTTP_HOST	192.168.9.123
HTTP_CONNECTION	keep-alive
HTTP_USER_AGENT	Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11
HTTP_ACCEPT	text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
HTTP_ACCEPT_ENCODING	gzip,deflate,sdch
HTTP_ACCEPT_LANGUAGE	en-US,en;q=0.8
HTTP_ACCEPT_CHARSET	ISO-8859-1,utf-8;q=0.7,*;q=0.3
PATH	/usr/local/bin:/usr/bin:/bin
SERVER_SIGNATURE	Apache/2.2.22 (Ubuntu) Server at 192.168.9.123 Port 80
SERVER_SOFTWARE	Apache/2.2.22 (Ubuntu)
SERVER_NAME	192.168.9.123
SERVER_ADDR	192.168.9.123
SERVER_PORT	80
REMOTE_ADDR	192.168.9.145
DOCUMENT_ROOT	/var/www
SERVER_ADMIN	webmaster@localhost
SCRIPT_FILENAME	/var/www/test.php
REMOTE_PORT	65260
GATEWAY_INTERFACE	CGI/1.1
SERVER_PROTOCOL	HTTP/1.1
REQUEST_METHOD	GET
QUERY_STRING	no value
REQUEST_URI	/test.php
SCRIPT_NAME	/test.php

HTTP Headers Information

HTTP Request Headers
HTTP Request	GET /test.php HTTP/1.1
Host	192.168.9.123
Connection	keep-alive
User-Agent	Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11
Accept	text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding	gzip,deflate,sdch
Accept-Language	en-US,en;q=0.8
Accept-Charset	ISO-8859-1,utf-8;q=0.7,*;q=0.3
HTTP Response Headers
X-Powered-By	PHP/5.3.10-1ubuntu3.4
Vary	Accept-Encoding
Content-Encoding	gzip

bcmath

BCMath support

enabled

Directive	Local Value	Master Value
bcmath.scale	0	0

bz2

BZip2 Support	Enabled
Stream Wrapper support	compress.bzip2://
Stream Filter support	bzip2.decompress, bzip2.compress
BZip2 Version	1.0.6, 6-Sept-2010

calendar

Calendar support

enabled

Core

PHP Version

5.3.10-1ubuntu3.4

Directive	Local Value	Master Value
allow_call_time_pass_reference	Off	Off
allow_url_fopen	On	On
allow_url_include	Off	Off
always_populate_raw_post_data	Off	Off
arg_separator.input	&	&
arg_separator.output	&	&
asp_tags	Off	Off
auto_append_file	no value	no value
auto_globals_jit	On	On
auto_prepend_file	no value	no value
browscap	no value	no value
default_charset	no value	no value
default_mimetype	text/html	text/html
define_syslog_variables	Off	Off
disable_classes	no value	no value
disable_functions	pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,	pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
display_errors	Off	Off
display_startup_errors	Off	Off
doc_root	no value	no value
docref_ext	no value	no value
docref_root	no value	no value
enable_dl	Off	Off
error_append_string	no value	no value
error_log	no value	no value
error_prepend_string	no value	no value
error_reporting	22527	22527
exit_on_timeout	Off	Off
expose_php	On	On
extension_dir	/usr/lib/php5/20090626	/usr/lib/php5/20090626
file_uploads	On	On
highlight.bg	#FFFFFF	#FFFFFF
highlight.comment	#FF8000	#FF8000
highlight.default	#0000BB	#0000BB
highlight.html	#000000	#000000
highlight.keyword	#007700	#007700
highlight.string	#DD0000	#DD0000
html_errors	Off	Off
ignore_repeated_errors	Off	Off
ignore_repeated_source	Off	Off
ignore_user_abort	Off	Off
implicit_flush	Off	Off
include_path	.:/usr/share/php:/usr/share/pear	.:/usr/share/php:/usr/share/pear
log_errors	On	On
log_errors_max_len	1024	1024
magic_quotes_gpc	Off	Off
magic_quotes_runtime	Off	Off
magic_quotes_sybase	Off	Off
mail.add_x_header	On	On
mail.force_extra_parameters	no value	no value
mail.log	no value	no value
max_execution_time	30	30
max_file_uploads	20	20
max_input_nesting_level	64	64
max_input_time	60	60
max_input_vars	1000	1000
memory_limit	128M	128M
open_basedir	no value	no value
output_buffering	4096	4096
output_handler	no value	no value
post_max_size	8M	8M
precision	14	14
realpath_cache_size	16K	16K
realpath_cache_ttl	120	120
register_argc_argv	Off	Off
register_globals	Off	Off
register_long_arrays	Off	Off
report_memleaks	On	On
report_zend_debug	On	On
request_order	GP	GP
safe_mode	Off	Off
safe_mode_exec_dir	no value	no value
safe_mode_gid	Off	Off
safe_mode_include_dir	no value	no value
sendmail_from	no value	no value
sendmail_path	/usr/sbin/sendmail -t -i	/usr/sbin/sendmail -t -i
serialize_precision	17	17
short_open_tag	On	On
SMTP	localhost	localhost
smtp_port	25	25
sql.safe_mode	Off	Off
track_errors	Off	Off
unserialize_callback_func	no value	no value
upload_max_filesize	2M	2M
upload_tmp_dir	no value	no value
user_dir	no value	no value
user_ini.cache_ttl	300	300
user_ini.filename	.user.ini	.user.ini
variables_order	GPCS	GPCS
xmlrpc_error_number	0	0
xmlrpc_errors	Off	Off
y2k_compliance	On	On
zend.enable_gc	On	On

ctype

ctype functions

enabled

date

date/time support	enabled
"Olson" Timezone Database Version	0.system
Timezone Database	internal
Default timezone	America/Los_Angeles

Directive	Local Value	Master Value
date.default_latitude	31.7667	31.7667
date.default_longitude	35.2333	35.2333
date.sunrise_zenith	90.583333	90.583333
date.sunset_zenith	90.583333	90.583333
date.timezone	no value	no value

dba

DBA support	enabled
Supported handlers	cdb cdb_make db4 inifile flatfile

Directive	Local Value	Master Value
dba.default_handler	flatfile	flatfile

dom

DOM/XML	enabled
DOM/XML API Version	20031129
libxml Version	2.7.8
HTML Support	enabled
XPath Support	enabled
XPointer Support	enabled
Schema Support	enabled
RelaxNG Support	enabled

ereg

Regex Library

Bundled library enabled

exif

EXIF Support	enabled
EXIF Version	1.4 $Id: exif.c 321634 2012-01-01 13:15:04Z felipe $
Supported EXIF Version	0220
Supported filetypes	JPEG,TIFF

Directive	Local Value	Master Value
exif.decode_jis_intel	JIS	JIS
exif.decode_jis_motorola	JIS	JIS
exif.decode_unicode_intel	UCS-2LE	UCS-2LE
exif.decode_unicode_motorola	UCS-2BE	UCS-2BE
exif.encode_jis	no value	no value
exif.encode_unicode	ISO-8859-15	ISO-8859-15

fileinfo

fileinfo support	enabled
version	1.0.5-dev

filter

Input Validation and Filtering	enabled
Revision	$Revision: 321634 $

Directive	Local Value	Master Value
filter.default	unsafe_raw	unsafe_raw
filter.default_flags	no value	no value

ftp

FTP support

enabled

gd

GD Support	enabled
GD Version	2.0
FreeType Support	enabled
FreeType Linkage	with freetype
FreeType Version	2.4.8
T1Lib Support	enabled
GIF Read Support	enabled
GIF Create Support	enabled
JPEG Support	enabled
libJPEG Version	unknown
PNG Support	enabled
libPNG Version	1.2.46
WBMP Support	enabled

Directive	Local Value	Master Value
gd.jpeg_ignore_warning	0	0

gettext

GetText Support

enabled

hash

hash support	enabled
Hashing Engines	md2 md4 md5 sha1 sha224 sha256 sha384 sha512 ripemd128 ripemd160 ripemd256 ripemd320 whirlpool tiger128,3 tiger160,3 tiger192,3 tiger128,4 tiger160,4 tiger192,4 snefru snefru256 gost adler32 crc32 crc32b salsa10 salsa20 haval128,3 haval160,3 haval192,3 haval224,3 haval256,3 haval128,4 haval160,4 haval192,4 haval224,4 haval256,4 haval128,5 haval160,5 haval192,5 haval224,5 haval256,5

iconv

iconv support	enabled
iconv implementation	glibc
iconv library version	2.15

Directive	Local Value	Master Value
iconv.input_encoding	ISO-8859-1	ISO-8859-1
iconv.internal_encoding	ISO-8859-1	ISO-8859-1
iconv.output_encoding	ISO-8859-1	ISO-8859-1

json

json support	enabled
json version	1.2.1

libxml

libXML support	active
libXML Compiled Version	2.7.8
libXML Loaded Version	20708
libXML streams	enabled

mbstring

Multibyte Support	enabled
Multibyte string engine	libmbfl
HTTP input encoding translation	disabled

mbstring extension makes use of "streamable kanji code filter and converter", which is distributed under the GNU Lesser General Public License version 2.1.

Multibyte (japanese) regex support	enabled
Multibyte regex (oniguruma) backtrack check	On
Multibyte regex (oniguruma) version	4.7.1

Directive	Local Value	Master Value
mbstring.detect_order	no value	no value
mbstring.encoding_translation	Off	Off
mbstring.func_overload	0	0
mbstring.http_input	pass	pass
mbstring.http_output	pass	pass
mbstring.http_output_conv_mimetypes	^(text/|application/xhtml\+xml)	^(text/|application/xhtml\+xml)
mbstring.internal_encoding	no value	no value
mbstring.language	neutral	neutral
mbstring.strict_detection	Off	Off
mbstring.substitute_character	no value	no value

mcrypt

mcrypt support	enabled
mcrypt_filter support	enabled
Version	2.5.8
Api No	20021217
Supported ciphers	cast-128 gost rijndael-128 twofish arcfour cast-256 loki97 rijndael-192 saferplus wake blowfish-compat des rijndael-256 serpent xtea blowfish enigma rc2 tripledes
Supported modes	cbc cfb ctr ecb ncfb nofb ofb stream

Directive	Local Value	Master Value
mcrypt.algorithms_dir	no value	no value
mcrypt.modes_dir	no value	no value

mhash

MHASH support	Enabled
MHASH API Version	Emulated Support

mysql

MySQL Support	enabled
Active Persistent Links	0
Active Links	0
Client API version	5.5.28
MYSQL_MODULE_TYPE	external
MYSQL_SOCKET	/var/run/mysqld/mysqld.sock
MYSQL_INCLUDE	-I/usr/include/mysql
MYSQL_LIBS	-L/usr/lib/x86_64-linux-gnu -lmysqlclient_r

Directive	Local Value	Master Value
mysql.allow_local_infile	On	On
mysql.allow_persistent	On	On
mysql.connect_timeout	60	60
mysql.default_host	no value	no value
mysql.default_password	no value	no value
mysql.default_port	no value	no value
mysql.default_socket	/var/run/mysqld/mysqld.sock	/var/run/mysqld/mysqld.sock
mysql.default_user	no value	no value
mysql.max_links	Unlimited	Unlimited
mysql.max_persistent	Unlimited	Unlimited
mysql.trace_mode	Off	Off

mysqli

MysqlI Support	enabled
Client API library version	5.5.28
Active Persistent Links	0
Inactive Persistent Links	0
Active Links	0
Client API header version	5.5.24
MYSQLI_SOCKET	/var/run/mysqld/mysqld.sock

Directive	Local Value	Master Value
mysqli.allow_local_infile	On	On
mysqli.allow_persistent	On	On
mysqli.default_host	no value	no value
mysqli.default_port	3306	3306
mysqli.default_pw	no value	no value
mysqli.default_socket	/var/run/mysqld/mysqld.sock	/var/run/mysqld/mysqld.sock
mysqli.default_user	no value	no value
mysqli.max_links	Unlimited	Unlimited
mysqli.max_persistent	Unlimited	Unlimited
mysqli.reconnect	Off	Off

openssl

OpenSSL support	enabled
OpenSSL Library Version	OpenSSL 1.0.1 14 Mar 2012
OpenSSL Header Version	OpenSSL 1.0.1 14 Mar 2012

pcre

PCRE (Perl Compatible Regular Expressions) Support	enabled
PCRE Library Version	8.12 2011-01-15

Directive	Local Value	Master Value
pcre.backtrack_limit	1000000	1000000
pcre.recursion_limit	100000	100000

PDO

PDO support	enabled
PDO drivers	mysql

pdo_mysql

PDO Driver for MySQL	enabled
Client API version	5.5.28

Directive	Local Value	Master Value
pdo_mysql.default_socket	/var/run/mysqld/mysqld.sock	/var/run/mysqld/mysqld.sock

Phar

Phar: PHP Archive support	enabled
Phar EXT version	2.0.1
Phar API version	1.1.1
SVN revision	$Revision: 321634 $
Phar-based phar archives	enabled
Tar-based phar archives	enabled
ZIP-based phar archives	enabled
gzip compression	enabled
bzip2 compression	enabled
Native OpenSSL support	enabled

Phar based on pear/PHP_Archive, original concept by Davey Shafik. Phar fully realized by Gregory Beaver and Marcus Boerger. Portions of tar implementation Copyright (c) 2003-2009 Tim Kientzle.

Directive	Local Value	Master Value
phar.cache_list	no value	no value
phar.readonly	On	On
phar.require_hash	On	On

posix

Revision

$Revision: 321634 $

Reflection

Reflection	enabled
Version	$Revision: 321634 $

session

Session Support	enabled
Registered save handlers	files user
Registered serializer handlers	php php_binary wddx

Directive	Local Value	Master Value
session.auto_start	Off	Off
session.bug_compat_42	Off	Off
session.bug_compat_warn	Off	Off
session.cache_expire	180	180
session.cache_limiter	nocache	nocache
session.cookie_domain	no value	no value
session.cookie_httponly	Off	Off
session.cookie_lifetime	0	0
session.cookie_path	/	/
session.cookie_secure	Off	Off
session.entropy_file	no value	no value
session.entropy_length	0	0
session.gc_divisor	1000	1000
session.gc_maxlifetime	1440	1440
session.gc_probability	0	0
session.hash_bits_per_character	5	5
session.hash_function	0	0
session.name	PHPSESSID	PHPSESSID
session.referer_check	no value	no value
session.save_handler	files	files
session.save_path	/var/lib/php5	/var/lib/php5
session.serialize_handler	php	php
session.use_cookies	On	On
session.use_only_cookies	On	On
session.use_trans_sid	0	0

shmop

shmop support

enabled

SimpleXML

Simplexml support	enabled
Revision	$Revision: 321634 $
Schema support	enabled

soap

Soap Client	enabled
Soap Server	enabled

Directive	Local Value	Master Value
soap.wsdl_cache	1	1
soap.wsdl_cache_dir	/tmp	/tmp
soap.wsdl_cache_enabled	1	1
soap.wsdl_cache_limit	5	5
soap.wsdl_cache_ttl	86400	86400

sockets

Sockets Support

enabled

SPL

SPL support	enabled
Interfaces	Countable, OuterIterator, RecursiveIterator, SeekableIterator, SplObserver, SplSubject
Classes	AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException

standard

Dynamic Library Support	enabled
Path to sendmail	/usr/sbin/sendmail -t -i

Directive	Local Value	Master Value
assert.active	1	1
assert.bail	0	0
assert.callback	no value	no value
assert.quiet_eval	0	0
assert.warning	1	1
auto_detect_line_endings	0	0
default_socket_timeout	60	60
from	no value	no value
safe_mode_allowed_env_vars	PHP_	PHP_
safe_mode_protected_env_vars	LD_LIBRARY_PATH	LD_LIBRARY_PATH
url_rewriter.tags	a=href,area=href,frame=src,input=src,form=fakeentry	a=href,area=href,frame=src,input=src,form=fakeentry
user_agent	no value	no value

sysvmsg

sysvmsg support	enabled
Revision	$Revision: 321634 $

tokenizer

Tokenizer Support

enabled

wddx

WDDX Support	enabled
WDDX Session Serializer	enabled

xml

XML Support	active
XML Namespace Support	active
libxml2 Version	2.7.8

xmlreader

XMLReader

enabled

xmlwriter

XMLWriter

enabled

zip

Zip	enabled
Extension Version	$Id: php_zip.c 321634 2012-01-01 13:15:04Z felipe $
Zip version	1.9.1
Libzip version	0.9.0

zlib

ZLib Support	enabled
Stream Wrapper support	compress.zlib://
Stream Filter support	zlib.inflate, zlib.deflate
Compiled Version	1.2.1.1
Linked Version	1.2.3.4

Directive	Local Value	Master Value
zlib.output_compression	Off	Off
zlib.output_compression_level	-1	-1
zlib.output_handler	no value	no value

Additional Modules

Module Name
sysvsem
sysvshm

Environment

Variable	Value
APACHE_RUN_DIR	/var/run/apache2
APACHE_PID_FILE	/var/run/apache2.pid
PATH	/usr/local/bin:/usr/bin:/bin
APACHE_LOCK_DIR	/var/lock/apache2
LANG	C
APACHE_RUN_USER	www-data
APACHE_RUN_GROUP	www-data
APACHE_LOG_DIR	/var/log/apache2
PWD	/home/naresh

PHP Variables

Variable	Value
_SERVER["HTTP_HOST"]	192.168.9.123
_SERVER["HTTP_CONNECTION"]	keep-alive
_SERVER["HTTP_USER_AGENT"]	Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11
_SERVER["HTTP_ACCEPT"]	text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
_SERVER["HTTP_ACCEPT_ENCODING"]	gzip,deflate,sdch
_SERVER["HTTP_ACCEPT_LANGUAGE"]	en-US,en;q=0.8
_SERVER["HTTP_ACCEPT_CHARSET"]	ISO-8859-1,utf-8;q=0.7,*;q=0.3
_SERVER["PATH"]	/usr/local/bin:/usr/bin:/bin
_SERVER["SERVER_SIGNATURE"]	Apache/2.2.22 (Ubuntu) Server at 192.168.9.123 Port 80
_SERVER["SERVER_SOFTWARE"]	Apache/2.2.22 (Ubuntu)
_SERVER["SERVER_NAME"]	192.168.9.123
_SERVER["SERVER_ADDR"]	192.168.9.123
_SERVER["SERVER_PORT"]	80
_SERVER["REMOTE_ADDR"]	192.168.9.145
_SERVER["DOCUMENT_ROOT"]	/var/www
_SERVER["SERVER_ADMIN"]	webmaster@localhost
_SERVER["SCRIPT_FILENAME"]	/var/www/test.php
_SERVER["REMOTE_PORT"]	65260
_SERVER["GATEWAY_INTERFACE"]	CGI/1.1
_SERVER["SERVER_PROTOCOL"]	HTTP/1.1
_SERVER["REQUEST_METHOD"]	GET
_SERVER["QUERY_STRING"]	no value
_SERVER["REQUEST_URI"]	/test.php
_SERVER["SCRIPT_NAME"]	/test.php
_SERVER["PHP_SELF"]	/test.php
_SERVER["REQUEST_TIME"]	1347181887

PHP License

This program is free software; you can redistribute it and/or modify it under the terms of the PHP License as published by the PHP Group and included in the distribution in the file: LICENSE This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. If you did not receive a copy of the PHP license, or have any questions about PHP licensing, please contact license@php.net.